. >> nasa announced analysis of the first soil samples scooped up by mars rover n a meeting today, nasa says curiosity detected water. nasa says rumors of a blockbuster announcement were incorrect. it landed on a two year search that signs of life existed. >> researchers say water may be linked to increase in food allergy autos also, one thing women can do to help keep our brains sharp as we age. >> today q and a is just ahead. you can contact me at facebook.com/michael finney abc 7. i'll answer questions here, live, later. >> yes. clouds are beginning to thicken again, meaning more rain is on the way. i'll have the accu-weather forecast coming up. >> outside we go. take a look at traffic on 80. you can see sticky moving in both directions. stay with us. abc 7 news at 4:00 continues here in just a moment. you know how much grandma wanted to be here for your fist christmas? you see grandma lives waaaay down here, and you live way up here. brian, your cousin, he's a little bit older than you, he lives here, in chicago. and your aunt lisa lives here, in baltimore. uncle earnie? waaay out i